Go Language Details

This is a creation in Article, where the information may have evolved or changed.

Arrays and strings are value types, slices, mappings, channels are value types, and assignments need to be noted.

1 Package Main2 3 Import (4     "FMT"5 )6 7 Func Main () {8     //Array9A1: = [3]int{1,2,3}TenA2: =A1 Onea2[0] =2  AFmt. PRINTLN (A1)//print:1 2 3 -Fmt. PRINTLN (A2)//Print:2 2 3 -     //string theS1: ="123" -S2: =S1 -S2 ="223" -Fmt. Println (S1)//Print 123 +Fmt. PRINTLN (S2)//Print 223 -     //slices +Slice1: = []int{1,2,3} ASlice2: =Slice1 atslice2[0] =2  -Fmt. Println (Slice1)//Print 2 2 3 -Fmt. Println (SLICE2)//Print 2 2 3 -     //Map -M1: = Make (map[int]string) -m1[1] ="1"  inM2: =M1 -m2[1] ="2"  toFmt. PRINTLN (M1)//Print 1:2 +Fmt. Println (m2)//Print 1:2 -     //Chan theC1: = Make (chanBOOL) *C2: =C1 $ go func () {Panax NotoginsengV: = <-C2 -Fmt. Println (v)//Print True the     }()  +C1 <-true A}

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Byte is of type Uint8, string is not []byte or []rune type]

1 Package Main2 3 Import (4     "FMT"5 )6 7 Func Main () {8S: ="Hello World"9     varIInterface{} =sTen  One     Switchi. (type) { A      Case[]byte: -Fmt. Println ("string type is []byte") -      Case[]rune: theFmt. Println ("string type is []rune") -      Case[]int8: -Fmt. Println ("string type is []int8") -     }    +  -Slice: = []byte{1,2} +i =Slice A     Switchi. (type) { at      Case[]uint8: -Fmt. Println ("byte is uint8")//Print -     }    -}

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Interface is a two-tuple of type and value, nil type is empty and value is empty

1 Package Main2 3 Import (4     "FMT"5 )6 7Func Truenil ()Interface{} {8     returnNil9 }Ten  OneFunc Falsenil ()Interface{} { A     varRET *int= Nil//This nil comes with a type -     returnret - } the Func Main () { -     ifTruenil () = =Nil { -Fmt. Println ("Truenil")//Print Truenil -     }    +  -     ifFalsenil () = =Nil { +Fmt. Println ("Falsenil")//No Print A     }    at}

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